Patents by Inventor Der-Jang Liaw

Der-Jang Liaw has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9446400
    Abstract: A conjugated polymer is provided, having a structure of formula (I): in formula (I), n is an integer greater than 10, wherein (i) R1 is R2 is wherein A1 is a functional group having a tertiary amine group or a quaternary ammonium salt group, R4 is independently selected from hydrogen, fluorine, alkyl, alkoxy, fluoroalkyl, or fluoroalkoxy, or (ii) R1 is R2 is A2, wherein R3 is independently selected from hydrogen, alkyl, fluoroalkyl, A2, or and A2 is a functional group having a tertiary amine group or a quaternary ammonium salt group, wherein R5 is independently selected from hydrogen, alkyl, alkoxy, or fluoroalkyl.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: September 20, 2016
    Assignee: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Der-Jang Liaw, Yian Tai, Jyh-Chiang Jiang
  • Publication number: 20160002392
    Abstract: A conjugated polymer is provided, having a structure of formula (I): in formula (I), n is an integer greater than 10, wherein (i) R1 is R2 is wherein A1 is a functional group having a tertiary amine group or a quaternary ammonium salt group, R4 is independently selected from hydrogen, fluorine, alkyl, alkoxy, fluoroalkyl, or fluoroalkoxy, or (ii) R1 is R2 is A2, wherein R3 is independently selected from hydrogen, alkyl, fluoroalkyl, A2, or and A2 is a functional group having a tertiary amine group or a quaternary ammonium salt group, wherein R5 is independently selected from hydrogen, alkyl, alkoxy, or fluoroalkyl.
    Type: Application
    Filed: June 24, 2015
    Publication date: January 7, 2016
    Inventors: Der-Jang LIAW, Yian TAI, Jyh-Chiang JIANG
  • Patent number: 9074036
    Abstract: The present invention provides a method for preparing aqueous emulsion via water dispersible polyurethane grafted acrylate copolymerization, which first uses 2-8 wt % of isocyanate, 7-15 wt % of a polyol, 0.3-1.0 wt % of a polyol bearing hydrophilic carboxylic monomer, and 0.1˜2.0 wt % of an acrylic ester containing a hydroxyl group to cause a reaction and form an unsaturated double bond bearing polyurethane prepolymer, the NCO content of which is approximately 2˜8%. This is followed by introducing 0.3-1.0 wt % of an alkalic neutralizer to carry out a neutralization reaction, and then 25-40 wt % of pure water is used to effect water dispersion, after which 0.1˜0.5 wt % of a chain extender is added to form an ethylenically unsaturated water dispersible polyurethane prepolymer. A reaction system is formed by adding 40-60 wt % of deionized water, 20˜30 wt % of methyl methacrylate or an acrylate monomer to the ethylenically unsaturated water dispersible polyurethane prepolymer, and 0.1˜2.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: July 7, 2015
    Assignee: CHAMPWARD CHEMICAL INDUSTRIAL CO., LTD.
    Inventors: Der-Jang Liaw, Chi-Kuang Hu, Chun-Chin Wang
  • Patent number: 8981038
    Abstract: A polyimide including a structure shown as Formula II is provided, wherein X is halogen, A1 is selected from one of Formula 1 to Formula 18, and n is from 2 to 500,
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: March 17, 2015
    Assignee: Taiwan Textile Research Institute
    Inventors: Der-Jang Liaw, Wen-Hsiang Chen, Ying-Chi Huang, Bo-Cheng Tao
  • Publication number: 20140179878
    Abstract: A polyimide including a structure shown as Formula II is provided, wherein X is halogen, A1 is selected from one of Formula 1 to Formula 18, and n is from 2 to 500,
    Type: Application
    Filed: December 25, 2012
    Publication date: June 26, 2014
    Applicant: TAIWAN TEXTILE RESEARCH INSTITUTE
    Inventors: Der-Jang Liaw, Wen-Hsiang Chen, Ying-Chi Huang, Bo-Cheng Tao
  • Patent number: 8575265
    Abstract: The present invention provides a polymerization method for acrylic latex without emulsifier, in which a reaction system is formed from 40˜60 wt % of pure water and 2˜9 wt % of carboxylic acid monomers with carbon-carbon double bond polymerizable functional groups (A), and 40˜50 wt % of methyl methacrylate or acrylate monomers (B), and 0.2˜2.0 wt % of inorganic alkaline solution is first used to adjust the pH value of the reaction system to within a pH range of 9.0˜13.0, then 0.2˜1.0 wt % of peroxide sulfates are used as initiators, and emulsification polymerization is carried out. At the end of the reaction, organic amine compounds are used to adjust the pH value of the obtained aqueous resin latex to within the pH range 7.0˜9.5. Particle diameters of the manufactured aqueous resin latex are approximately 100˜30 nm, uniformly distributed and have excellent outward appearance. Moreover, acid value is low at 3.5˜6.5 mgKOH/g, and Its specific gravity is approximately 1.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: November 5, 2013
    Assignee: Champward Chemical Industrial Co., Ltd.
    Inventors: Der-Jang Liaw, Chih-Kuang Hu, Chih-Wei Chang
  • Patent number: 8492508
    Abstract: A polyimide represented by formula (6) is provided. The polyimide is fabricated by performing a polycondensation reaction with a amine compound shown in formula (4) and a dianhydride compound shown in formula (5) as monomers. In formulas (5) and (6), Ar represents aromatic group, and n represents a positive integer.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: July 23, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Patent number: 8367797
    Abstract: A polyamide represented by formula (6) is provided. The polyamide is fabricated by performing a polycondensation reaction with amine compound shown in formula (4) and an acid or derivative thereof shown in formula (5) as monomers. In formulas (5) and (6), X represents aromatic groups or aliphatic groups. In formula (5), R represents OH group or halogen.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: February 5, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Patent number: 8362171
    Abstract: Norbornene monomers with epoxy groups and polymer materials thereof are disclosed. The Norbornene monomers with epoxy groups are prepared by Diels-Alder reaction. The Norbornene monomers with epoxy groups are highly active for ring-opening-metathesis polymerization (ROMP), and the molecular weight and PDI value of the obtained polymers are controllable.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: January 29, 2013
    Assignee: National Taiwan University of Science & Technology
    Inventors: Der-Jang Liaw, Ching-Cheng Huang
  • Patent number: 8350000
    Abstract: The present invention discloses a polymer and a copolymer and a method of making the same. The monomer of the polymer of the present invention includes a bi-triphenylamine functional group having a first end and a second end; a fluorene functional group bonded to the first end; and at least two phenyl isopropyl group bonded to the second end.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: January 8, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Patent number: 8349999
    Abstract: The present invention discloses a pyrene-containing norbornene methylene amine which can be synthesized by 5-(amino methyl)bicycle[2.2.1]hept-2-ene (NBMA) and 1-bromopyrene. The pyrene-containing norbornene methylene amine can be used as a monomer for synthesizing a polymer containing pyrene side chain via Ring-Opening Metathesis Polymerization (ROMP). The polymer has good transmittance, optical and thermal properties.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: January 8, 2013
    Assignee: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Patent number: 8304514
    Abstract: The invention provides a conjugated polymer, a method for preparing the same, and optoelectronic devices employing the same. The conjugated polymer includes a structure represented by Formula (I), wherein, R1 is independently an octyl or dodecyl group, R2 is independently an H or 1,1,3,3-tetramethylbutyl, and, n is an integer larger than 1.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: November 6, 2012
    Assignee: National Taiwan University of Science & Technology
    Inventor: Der-Jang Liaw
  • Publication number: 20120277402
    Abstract: A dinitro compound, a diamine compound, a polyamide (PA) derived therefrom, and an optoelectronic device are provided. The PA is fabricated by performing a polycondensation reaction using the foregoing diamine compound and a diacyl chloride compound shown in formula (3) as monomers, and thus represented by formula (4). In formulas (3) and (4), X represents an aromatic group or an aliphatic group. The resultant novel PA can be applied to an optoelectronic device. Since the foregoing compounds have carbazole and pyridine groups, the PA is characterized by excellent solubility, a high glass transition temperature, thermal stability, excellent optical properties, and acidichromism.
    Type: Application
    Filed: August 2, 2011
    Publication date: November 1, 2012
    Applicant: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Publication number: 20120095163
    Abstract: The present invention provides a polymerization method for acrylic latex without emulsifier, in which a reaction system is formed from 40˜60 wt % of pure water and 2˜9 wt % of carboxylic acid monomers with carbon-carbon double bond polymerizable functional groups (A), and 40˜50 wt % of methyl methacrylate or acrylate monomers (B), and 0.2˜2.0 wt % of inorganic alkaline solution is first used to adjust the pH value of the reaction system to within a pH range of 9.0˜13.0, then 0.2˜1.0 wt % of peroxide sulfates are used as initiators, and emulsification polymerization is carried out. At the end of the reaction, organic amine compounds are used to adjust the pH value of the obtained aqueous resin latex to within the pH range 7.0˜9.5. Particle diameters of the manufactured aqueous resin latex are approximately 100˜30 nm, uniformly distributed and have excellent outward appearance. Moreover, acid value is low at 3.5˜6.5 mgKOH/g, and Its specific gravity is approximately 1.
    Type: Application
    Filed: July 6, 2011
    Publication date: April 19, 2012
    Applicant: Champward Chemical Industrial Co., Ltd
    Inventors: Der-Jang LIAW, Chih-Kuang HU, Chih-Wei CHANG
  • Publication number: 20120017994
    Abstract: The invention provides a conjugated polymer, a method for preparing the same, and optoelectronic devices employing the same. The conjugated polymer includes a structure represented by Formula (I), wherein, R1 is independently an octyl or dodecyl group, R2 is independently an H or 1,1,3,3-tetramethylbutyl, and, n is an integer larger than 1.
    Type: Application
    Filed: January 26, 2011
    Publication date: January 26, 2012
    Inventor: Der-Jang LIAW
  • Publication number: 20110275781
    Abstract: A polyimide represented by formula (6) is provided. The polyimide is fabricated by performing a polycondensation reaction with a amine compound shown in formula (4) and a dianhydride compound shown in formula (5) as monomers. In formulas (5) and (6), Ar represents aromatic group, and n represents a positive integer.
    Type: Application
    Filed: October 22, 2010
    Publication date: November 10, 2011
    Applicant: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Publication number: 20110275783
    Abstract: A polyamide represented by formula (6) is provided. The polyamide is fabricated by performing a polycondensation reaction with amine compound shown in formula (4) and an acid or derivative thereof shown in formula (5) as monomers. In formulas (5) and (6), X represents aromatic groups or aliphatic groups. In formula (5), R represents OH group or halogen.
    Type: Application
    Filed: August 23, 2010
    Publication date: November 10, 2011
    Applicant: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Publication number: 20110092666
    Abstract: The present invention discloses a pyrene-containing norbornene methylene amine which can be synthesized by 5-(amino methyl)bicycle[2.2.1]hept-2-ene (NBMA) and 1-bromopyrene. The pyrene-containing norbornene methylene amine can be used as a monomer for synthesizing a polymer containing pyrene side chain via Ring-Opening Metathesis Polymerization (ROMP). The polymer has good transmittance, optical and thermal properties.
    Type: Application
    Filed: May 24, 2010
    Publication date: April 21, 2011
    Applicant: National Taiwan University of Science and Technology
    Inventor: Der-Jang Liaw
  • Publication number: 20110092657
    Abstract: The present invention discloses a polymer and a copolymer and a method of making the same. The monomer of the polymer of the present invention includes a bi-triphenylamine functional group having a first end and a second end; a fluorene functional group bonded to the first end; and at least two phenyl isopropyl group bonded to the second end.
    Type: Application
    Filed: August 2, 2010
    Publication date: April 21, 2011
    Applicant: National Taiwan University of Science and Technoloy
    Inventor: Der-Jang LIAW
  • Patent number: 7772341
    Abstract: The present invention provided a norbornene compound with cross-linkable groups and their derivative polymers, wherein said cross-linkable groups were olefin or epoxy groups. Norbornene polymers with cross-linkable side chain and their block copolymers as well as modified derivatives were prepared via living ring-open metathesis polymerization method. The resulting polymers with excellent solubility and optic properties had narrow molecular weight distribution, well-controlled molecular weight, small refraction index and high transparency. They were also suitable for preparing hybrid materials with high thermal stability and chemical resistance.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: August 10, 2010
    Assignee: National Taiwan University of Science & Technology
    Inventors: Der-Jang Liaw, Ching-Cheng Huang, Shou-Mau Hong, Ming-Hung Huang